Improvement in windmills



eQ CARTER.

Wind-Mills.

Patented September 2,1873.

wmmmuunnl' INVENTDR, as. GM mQMXIV z AM. PHUIU-L/T/IUGHAPH/C MMXIIISBfiR/VE'S PROCESS) FnrTEn STATEs TENT DFFIG E.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent To all whom it may concern:

Be it known that I, GEORGE A. CARTER, of Princeton, county of Bureau andState of Illinois, have invented certain Improvements in Windmills, ofwhich the following is a specification My iuventionrelates toimprovements in governors or devices for automatically regulating thespeed of windmills. The invention consists in connecting theautomatically-operating governor with a combination of devices, by meansof which the sails may be adjusted or furled by hand, the connectionbeing made in such manner that the hand-operating device in no wayinterferes with the operation of the governor when the windwheel is inmotion.-

In the accompanying drawings, Figure 1 is an elevation of a windmillembodying my invention, only two sections of sails being shown.

Referring to the parts by letters, letters A A represent the tower orsupporting-frame; B, the bed-plate for the parts constituting the motorproper 5 G, the plate on which they turn 5 D, the main driving-shaft; E,the vane, supported by a truss, G g,- H H, two' opposite sections of thewind-wheel, and which is of that class in which radial arms h h projectfrom a spider, h and between each pair of arms h h the sails I arecarried, being attached in series of any desired number'to an axis, J,which has bearings for its ends in the arms h h. K is a sliding sleeveon the shaft D, with radial arms 70 and a circumferential groove, 70,and connected by-rods 7a with an outer plate, K, which reciprocates withit on the shaft D. L L are bars, weighted at their outer ends, andpivoted to standards Z l projecting from the axial bars J, their innerends pivoted to one arm of elbow-levers l l, the

other arm of which is connected by rods with radial arms 70 on thesleeve K. M is a bent and forked lever, its forked end resting in thegroove 70, its longer arm carrying an adjustable weight, m, and its bodypart pivoted at the bend in standards m. N is also a lever, pivoted nearits central part on the upper part of the truss G, and carrying at oneend an adjustable weight, a. This weight a may be dispensed with byinakingthe end of the lever heavy enough. 0 is a rod, pivoted No.142,436, dated September 2, 1873, application filed July 23, 1873.

. at its upper end to the weighted end of the lever N, and extendingdownward through a hole in the adjacent end of the lever M, and providedwith adjustable stops n a. P is the pitman, extending from thecrank-plate Q to the pump-piston R, the upper end of which has asuitable bearing in a sleeve-box, S. T is a rod, extending from one endof the lever N downward through the sleeve-box S, and attached at itslower end to a boss, t, which slides on the piston R. U is a rod,sliding in bearings u u, and attached at its lower end to a lever, V. Wis an arm, attached at one end to the rod U, and its other end forkedand resting in an annular groove in the boss t.

The operation is as follows: The full lines at Fig. 1 show the relativeposition of the parts when the mill is operating under a light steadywind, and in which case there will be but little or no movement of thegovernor;

but when the velocity of the wind increases,

and the speed of the wind-wheel is thereby increased, the weighted rodsL, through the centrifugal force consequent on the revolution of thewind-wheel, will move radially from the center of the wheel and turn thesails or sections of sails from the wind, and the greater the velocityof the wind, and consequent speed of the wheel, the greater will be theforce tending to throw the sails from the wind. To counteract the forceand movement of the rods L in this directiontheir inner ends areconnected by suitable mechanism to the sliding sleeve K, which is forcedinward on the shaft D, when the rods move out from the center of thewheel, and, as the sleeve D is in contact with the forked end of thelever M, the latter is necessarily raised until the weight m balancesthe force consequent on the movement of the rods L. In this way it willbe seen that a perfect sympathy is established between the weightedlever M and the weighted rods L, the least increase of force of the onebeing counterbalanced by the increased weight of the other, and anydecrease of force being immediately followed by a decrease in thecounterbalancing weight. The rods L and lever M thus act and react oneach other, and turn the sails from or to the wind, as it increases ordecreases in velocity, without being interfered with or cumbered by theweight of the device for furling the sails by hand. The stops n n on therod 0 prevent the turning of the sails too far in either direction; andthe distance between these stops can be adjusted as desired.

When it is desired to furl the sails, it is accomplished by pressingdown the lever V, when, through the connections U, T, N, and O, thelever M is raised, and through the connection of the latter with therods L the sails are turned to a horizontal position, as shown by dottedlines in the drawings.

I claimpose specified.

GEO. A. CARTER. Witnesses:

W. W. FERRIS, A. S. EATON.

